User account could be deleted yourself from the Speechie app. Use Delete Account menu item to delete your account. Menu item is available after login and account creation. The app will ask for confirmation and re-authentication before you will be able to delete your account.
If you have difficulties deleting your account, you can send a deletion request to our support email: [email protected]. It is mandatory to include your email address into this request so that we can identify and delete you account.